Grommet



FIG. 1 is a perspective view of a grommet showing the new design;

FIG. 2 is a side view thereof;

FIG. 3 is a bottom view thereof; and,

FIG. 4 is a top view thereof.

The broken line showing in FIG. 2 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a grommet, as shown and described. 